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1
1036
Enquire within upon everything
·
Robert Kemp Philp
805
2333.
To
make
a
Fac-simile
of
a
Leaf
in
Copper.
This
beautiful
experiment
can
be
performed
by
any
person
in
possession
of
a
common
galvanic
battery.
The
process
is
as
follows:
Soften
a
piece
of
gutta
percha
over
a
candle,
or
before
a
fire;
knead
it
with
the
moist
fingers
upon
a
table,
until
the
surface
is
perfectly
smooth,
and
large
enough
to
cover
the
leaf
to
be
copied;
lay
the
leaf
flat
upon
the
surface,
and
press
every
part
well
into
the
gutta-percha.
In
about
five
minutes
the
leaf
may
be
removed,
when,
if
the
operation
has
been
carefully
performed,
a
perfect
impression
of
the
leaf
will
be
made
in
the
gutta
percha.
This
must
now
be
attached
to
the
wire
in
connection
with
the
zinc
end
of
the
battery
(which
can
easily
be
done
by
heating
the
end
of
the
wire,
and
pressing
it
into
the
gutta
percha),
dusted
well
over
with
the
best
blacklead
with
a
camel-hair
brush--the
object
of
which
is
to
render
it
a
conductor
of
electricity;
it
should
then
be
completely
immersed
in
a
saturated
solution
of
sulphate
of
copper.
A
piece
of
copper
attached
to
the
wire
in
connection
with
the
copper
end
of
the
battery
must
also
be
inserted
into
the
copper
solution
facing
ihe
gutta
percha,
but
not
touching
it;
this
not
only
acts
as
a
conductor
to
the
electricity,
but
also
maintains
the
solution
of
copper
of
a
permanent
strength.
In
a
short
time
the
copper
will
be
found
to
creep
over
the
whole
surface
of
the
gutta
percha,
and
in
about
twenty-four
hours
a
thick
deposit
of
copper
will
be
obtained,
which
may
then
be
detached
from
the
mould.
The
accuracy
with
which
a
leaf
may
thus
be
cast
is
truly
surprising.
Marker
Marker
Fine marker
White-out
Fine white-out
Circle
Paint
Unmarker
Hand
Scalpel
Dice
Sieve
Purify
Undo
Redo
Start over
